#1F2391#1F2391

#1F2391 is a dark, vivid blue. Relative luminance 0.035; OKLCH L 34.4% C 0.174 H 271.1°. Best body text is #FFFFFF at 12.30:1 contrast (WCAG AA passes).

Color values

HEX	#1F2391
RGB	rgb(31, 35, 145)
HSL	hsl(238, 65%, 35%)
HSV	hsv(238, 79%, 57%)
CMYK	cmyk(78.6%, 75.9%, 0%, 43.1%)
CIE-LAB	lab(22.08, 37.96, -60.21)
CIE-LCH	lch(22.08, 71.17, 302.23°)
OKLab	oklab(34.43% 0.0035 -0.1743)
OKLCH	oklch(34.43% 0.174 271.1)
XYZ	xyz(6.2752, 3.5370, 27.1346)
Luminance	0.0354 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2391 #918D1F

analogous

#1F5C91 #1F2391 #541F91

triadic

#1F2391 #911F23 #23911F

tetradic

#1F2391 #911F5C #918D1F #1F9154

square

#1F2391 #911F5C #918D1F #1F9154

split-complementary

#1F2391 #91541F #5C911F

monochromatic

#090B2C #14175F #1F2391 #2A2FC3 #5155DA

Accessibility & contrast

On white

12.30

#1F2391 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#1F2391 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2391

12.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2391	#FFFFFF	#000000	##FFFFFF
##1F2391	1.00	12.30	1.71	12.30
#FFFFFF	12.30	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A94

Deuteranopia (green-blind)

#002F8F

Tritanopia (blue-blind)

#004358

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #1f2391;
/* rgb */ color: rgb(31, 35, 145);
/* oklch */ color: oklch(34.4% 0.174 271.1);

Tailwind

colors: {
  custom: {
    50: '#705fb2',
    500: '#1f2391',
    950: '#000000',
  },
}

SCSS

$custom: #1f2391;
$custom-light: #705fb2;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2391",
  "rgb": {
    "r": 31,
    "g": 35,
    "b": 145
  },
  "hsl": {
    "h": 237.895,
    "s": 64.773,
    "l": 34.51
  },
  "oklch": {
    "l": 0.34428,
    "c": 0.17436,
    "h": 271.1
  },
  "luminance": 0.03538
}

Semantic roles & 50–950 ramp

primary

#1F2391

secondary

#BDB94F

accent

#E240E8

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090511

muted

#7B7980

Preview Lab

Preview with #1F2391

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →